From: David Fetter <david@fetter.org>
Date: Mon, 28 Nov 2011 08:07:53 +0000 (+0000)
Subject: PostgreSQL Weekly News November 27, 2011
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=358cda41adb4782bb514a616df90c06d29e50325;p=pgweb-old.git

PostgreSQL Weekly News November 27, 2011

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 <p>Here is the <a href="http://www.postgresql.org/files/weeklynews.xml">RSS feed</a>.</p>
 
 <ul>
+    <li><a href="/https/git.postgresql.org/community/weeklynews/pwn20111127">November 27th 2011</a></li>
     <li><a href="/https/git.postgresql.org/community/weeklynews/pwn20111120">November 20th 2011</a></li>
     <li><a href="/https/git.postgresql.org/community/weeklynews/pwn20111113">November 13th 2011</a></li>
     <li><a href="/https/git.postgresql.org/community/weeklynews/pwn20111106">November 6th 2011</a></li>
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+<!-- BEGIN page_title_block -->
+Weekly News - November 27 2011
+<!-- END page_title_block -->
+
+<h1>PostgreSQL Weekly News - November 27 2011</h1>
+
+<p>
+FOSDEM 2012 - PostgreSQL Devroom: Call for Speakers is open until
+December 20, 2011.
+<a href="https://www.postgresql.eu/events/callforpapers/fosdem2012/">https://www.postgresql.eu/events/callforpapers/fosdem2012/</a>
+</p>
+
+<h2>PostgreSQL Product News</h2>
+<h2>PostgreSQL 9.1 Feature of the Week</h2>
+<h2>PostgreSQL Tip of the Week</h2>
+<h2>PostgreSQL Jobs for November</h2>
+<p>
+<a href="http://archives.postgresql.org/pgsql-jobs/2011-11/threads.php">http://archives.postgresql.org/pgsql-jobs/2011-11/threads.php</a>
+</p>
+
+<h2>PostgreSQL Local</h2>
+<p>
+The Call for Papers is open for PostgreSQL Session #3, which will be
+held in Paris, Feb 2nd, 2012.  The deadline for proposals is the 30th
+November 2011 and selected speakers will be notified by the 14th
+December 2011.  Proposals (in French or English) should be submitted
+to call-for-paper AT postgresql-sessions DOT org.
+More information at: <a href="http://www.postgresql-sessions.org/en/3/">http://www.postgresql-sessions.org/en/3/</a>
+</p>
+
+<p>
+FOSDEM 2012 - PostgreSQL Devroom: Call for Speakers is open until
+December 20, 2011.
+<a href="https://www.postgresql.eu/events/callforpapers/fosdem2012/">https://www.postgresql.eu/events/callforpapers/fosdem2012/</a>
+</p>
+
+<p>
+The fifth annual "Prague PostgreSQL Developers Day" conference,
+organized by CSPUG (Czech and Slovak PostgreSQL Users Group), will be
+held on February 9, 2012 in Prague.  The Call for Papers is open.
+Please send proposals including contact information, topic, and
+expected length of session to info AT p2d2 DOT cz.
+</p>
+
+<p>
+The Call for Papers for is open for FLOSS UK, which will be held in
+Edinburgh from the 20th to the 22nd March 2012.  The deadline for
+proposals is the 18th November 2011 and selected speakers will be
+notified by the 25th November 2011.  Proposals should be submitted to
+postgresql2012 AT flossuk DOT org.  More information at:
+<a href="http://www.flossuk.org/Events/Spring2012">http://www.flossuk.org/Events/Spring2012</a>
+</p>
+
+<p>
+
+== PostgreSQL in the News ==
+</p>
+
+<p>
+Planet PostgreSQL: <a href="http://planet.postgresql.org/">http://planet.postgresql.org/</a>
+</p>
+
+<p>
+PostgreSQL Weekly News is brought to you this week by David Fetter
+</p>
+
+<p>
+Submit news and announcements by Sunday at 3:00pm Pacific time.
+Please send English language ones to david@fetter.org, German language
+to pwn@pgug.de, Italian language to pwn@itpug.org.  Spanish language
+to pwn@arpug.com.ar.
+</p>
+
+<h2>Reviews</h2>
+<h2>Applied Patches</h2>
+<p>
+Tom Lane pushed:
+</p>
+
+<p>
+- Fix citext upgrade script to update derived copies of
+  pg_type.typcollation.  If the existing citext type has not merely
+  been created, but used in any tables, then the upgrade script wasn't
+  doing enough.  We have to update attcollation for each citext table
+  column, and indcollation for each citext index column, as well.  Per
+  report from Rudolf van der Leeden.
+  <a href="http://git.postgresql.org/pg/commitdiff/9b97b7f8356c63ea0b6704718d75ea01ec3035bf">http://git.postgresql.org/pg/commitdiff/9b97b7f8356c63ea0b6704718d75ea01ec3035bf</a>
+</p>
+
+<p>
+- More code review for rangetypes patch.  Fix up some infelicitous
+  coding in DefineRange, and add some missing error checks.  Rearrange
+  operator strategy number assignments for GiST anyrange opclass so
+  that they don't make such a mess of opr_sanity's table of operator
+  names associated with different strategy numbers.  Assign
+  hopefully-temporary selectivity estimators to range operators that
+  didn't have one --- poor as the estimates are, they're still a lot
+  better than the default 0.5 estimate, and they'll shut up the
+  opr_sanity test that wants to see selectivity estimators on all
+  built-in operators.
+  <a href="http://git.postgresql.org/pg/commitdiff/a4ffcc8e115ed637f69ecb0295d78cc97f08a483">http://git.postgresql.org/pg/commitdiff/a4ffcc8e115ed637f69ecb0295d78cc97f08a483</a>
+</p>
+
+<p>
+- Still more review for range-types patch.  Per discussion, relax the
+  range input/construction rules so that the only hard error is lower
+  bound > upper bound.  Cases where the lower bound is <= upper bound,
+  but the range nonetheless normalizes to empty, are now permitted.
+  Fix core dump in range_adjacent when bounds are infinite.  Marginal
+  cleanup of regression test cases, some more code commenting.
+  <a href="http://git.postgresql.org/pg/commitdiff/766948beddef66dd89563f465919eca6e131861c">http://git.postgresql.org/pg/commitdiff/766948beddef66dd89563f465919eca6e131861c</a>
+</p>
+
+<p>
+- Improve implementation of range-contains-element tests.  Implement
+  these tests directly instead of constructing a singleton range and
+  then applying range-contains.  This saves a range
+  serialize/deserialize cycle as well as a couple of redundant
+  bound-comparison steps, and adds very little code on net.  Remove
+  elem_contained_by_range from the GiST opclass: it doesn't belong
+  there because there is no way to use it in an index clause (where
+  the indexed column would have to be on the left).  Its commutator is
+  in the opclass, and that's what counts.
+  <a href="http://git.postgresql.org/pg/commitdiff/cddc819e45010492da00164d225a749661f43aef">http://git.postgresql.org/pg/commitdiff/cddc819e45010492da00164d225a749661f43aef</a>
+</p>
+
+<p>
+- Remove zero- and one-argument range constructor functions.  Per
+  discussion, the zero-argument forms aren't really worth the catalog
+  space (just write 'empty' instead).  The one-argument forms have
+  some use, but they also have a serious problem with looking too much
+  like functional cast notation; to the point where in many real
+  use-cases, the parser would misinterpret what was wanted.
+  Committing this as a separate patch, with the thought that we might
+  want to revert part or all of it if we can think of some way around
+  the cast ambiguity.
+  <a href="http://git.postgresql.org/pg/commitdiff/df73584431e7edb1dd76578777bd0fcc17b916a1">http://git.postgresql.org/pg/commitdiff/df73584431e7edb1dd76578777bd0fcc17b916a1</a>
+</p>
+
+<p>
+- Remove user-selectable ANALYZE option for range types.  It's not
+  clear that a per-datatype typanalyze function would be any more
+  useful than a generic typanalyze for ranges.  What *is* clear is
+  that letting unprivileged users select typanalyze functions is a
+  crash risk or worse.  So remove the option from CREATE TYPE AS
+  RANGE, and instead put in a generic typanalyze function for ranges.
+  The generic function does nothing as yet, but hopefully we'll
+  improve that before 9.2 release.
+  <a href="http://git.postgresql.org/pg/commitdiff/74c1723fc8dca2d70576ef2f0a66f4a7c99c173a">http://git.postgresql.org/pg/commitdiff/74c1723fc8dca2d70576ef2f0a66f4a7c99c173a</a>
+</p>
+
+<p>
+- Creator of a range type must have permission to call support
+  functions.  Since range types can be created by non-superusers, we
+  need to consider their permissions.  Ideally we'd check this when
+  the type is used, not when it's created, but that seems like much
+  more trouble than it's worth.  The existing restriction that the
+  support functions be immutable already prevents most cases where an
+  unauthorized call to a function might be thought a security issue,
+  and the fact that the user has no access to the results of the
+  system's calls to subtype_diff closes off the other plausible reason
+  for concern.  So this check is basically pro-forma, but let's make
+  it anyway.
+  <a href="http://git.postgresql.org/pg/commitdiff/a912a2784be5d144aab89e447dfe8ca74b6ad079">http://git.postgresql.org/pg/commitdiff/a912a2784be5d144aab89e447dfe8ca74b6ad079</a>
+</p>
+
+<p>
+- Adjust range_adjacent to support different canonicalization rules.
+  The original coding would not work for discrete ranges in which the
+  canonicalization rule is to produce symmetric boundaries (either []
+  or () style), as noted by Jeff Davis.  Florian Pflug pointed out
+  that we could fix that by invoking the canonicalization function to
+  see if the range "between" the two given ranges normalizes to empty.
+  This implementation of Florian's idea is a tad slower than the
+  original code, but only in the case where there actually is a
+  canonicalization function --- if not, it's essentially the same
+  logic as before.
+  <a href="http://git.postgresql.org/pg/commitdiff/b7056b832444696c931d59af057b0a345f5ae178">http://git.postgresql.org/pg/commitdiff/b7056b832444696c931d59af057b0a345f5ae178</a>
+</p>
+
+<p>
+- Some more editing of the range-types documentation.  Be more
+  thorough about specifying the expectations for canonical and
+  subtype_diff functions, and move that info to the same place.
+  <a href="http://git.postgresql.org/pg/commitdiff/604d4c4c95c44090af25083ce6624fea3ebb4553">http://git.postgresql.org/pg/commitdiff/604d4c4c95c44090af25083ce6624fea3ebb4553</a>
+</p>
+
+<p>
+- Fix unsupported options in CREATE TABLE ... AS EXECUTE.  The WITH
+  [NO] DATA option was not supported, nor the ability to specify
+  replacement column names; the former limitation wasn't even
+  documented, as per recent complaint from Naoya Anzai.  Fix by moving
+  the responsibility for supporting these options into the executor.
+  It actually takes less code this way ...  catversion bump due to
+  change in representation of IntoClause, which might affect stored
+  rules.
+  <a href="http://git.postgresql.org/pg/commitdiff/9ed439a9c07b69c2617cc98596611fdbdc22472c">http://git.postgresql.org/pg/commitdiff/9ed439a9c07b69c2617cc98596611fdbdc22472c</a>
+</p>
+
+<p>
+- Fix erroneous replay of GIN_UPDATE_META_PAGE WAL records.  A simple
+  thinko in ginRedoUpdateMetapage, namely failing to increment a loop
+  counter, led to inserting records into the last pending-list page in
+  the wrong order (the opposite of that intended).  So far as I can
+  tell, this would not upset the code that eventually flushes pending
+  items into the main part of the GIN index.  But it did break the
+  code that searched the pending list for matches, resulting in
+  transient failure to find matching entries during index lookups, as
+  illustrated in bug #6307 from Maksym Boguk.  Back-patch to 8.4 where
+  the incorrect code was introduced.
+  <a href="http://git.postgresql.org/pg/commitdiff/877b67c38b946dcbf70fe11736bdde841e4c826b">http://git.postgresql.org/pg/commitdiff/877b67c38b946dcbf70fe11736bdde841e4c826b</a>
+</p>
+
+<p>
+- Fix overly-aggressive and inconsistent quoting in OS X start script.
+  Sidar Lopez, per bug #6310, with some additional improvements by me.
+  Back-patch to 9.0, where the issue was introduced.
+  <a href="http://git.postgresql.org/pg/commitdiff/6c8768c3861d6690656b74676c44ffa63c0e4ef7">http://git.postgresql.org/pg/commitdiff/6c8768c3861d6690656b74676c44ffa63c0e4ef7</a>
+</p>
+
+<p>
+- Make GiST index searches smarter about queries against empty ranges.
+  In the cases where the result of the called proc is negated, we
+  should explicitly test both inputs for empty, to ensure we'll never
+  return "true" for an unsatisfiable query.  In other cases we can
+  rely on the called proc to say the right thing.
+  <a href="http://git.postgresql.org/pg/commitdiff/5966bcecf6167f2921e614e66499fa4d2c195c64">http://git.postgresql.org/pg/commitdiff/5966bcecf6167f2921e614e66499fa4d2c195c64</a>
+</p>
+
+<p>
+- Use the proper macro to convert a bool to a Datum.  The original
+  coding was var->value = (Datum) state; which is bogus, and then in
+  commit 2f0f7b4bce13e68394543728801ef011fd82fac6 it was "corrected"
+  to var->value = PointerGetDatum(state); which is a faithful
+  translation but still wrong.  This seems purely cosmetic, though, so
+  no need for a back-patch.  Pavel Stehule
+  <a href="http://git.postgresql.org/pg/commitdiff/8722a1a06aedbbbeb4f848a7b9ee62d6ae8649c6">http://git.postgresql.org/pg/commitdiff/8722a1a06aedbbbeb4f848a7b9ee62d6ae8649c6</a>
+</p>
+
+<p>
+- Improve GiST range-contained-by searches by adding a flag for empty
+  ranges.  In the original implementation, a range-contained-by search
+  had to scan the entire index because an empty range could be lurking
+  anywhere.  Improve that by adding a flag to upper GiST entries that
+  says whether the represented subtree contains any empty ranges.
+  Also, make a simple mod to the penalty function to discourage empty
+  ranges from getting pushed into subtrees without any.  This needs
+  more work, and the picksplit function should be taught about it too,
+  but that code can be improved without causing an on-disk
+  compatibility break; so we'll leave it for another day.  Since we're
+  breaking on-disk compatibility of range values anyway, I took the
+  opportunity to reorganize the range flags bits; the unused
+  RANGE_xB_NULL bits are now adjacent, which might open the door for
+  using them in some other way later.  In passing, remove the GiST
+  range opclass entry for <>, which doesn't seem like it can really be
+  indexed usefully.  Alexander Korotkov, with some editorializing by
+  Tom Lane.
+  <a href="http://git.postgresql.org/pg/commitdiff/c66e4f138b04d749a713ad075e16f3d60975f5ad">http://git.postgresql.org/pg/commitdiff/c66e4f138b04d749a713ad075e16f3d60975f5ad</a>
+</p>
+
+<p>
+- Use IEEE infinity, not 1e10, for null-and-not-null case in
+  gistpenalty().  Use of a randomly chosen large value was never
+  exactly graceful, and now that there are penalty functions that are
+  intentionally using infinity, it doesn't seem like a good idea for
+  null-vs-not-null to be using something less.
+  <a href="http://git.postgresql.org/pg/commitdiff/9f4563f743eab0682f908d51fa3a9c630b31322d">http://git.postgresql.org/pg/commitdiff/9f4563f743eab0682f908d51fa3a9c630b31322d</a>
+</p>
+
+<p>
+- Ensure that whole-row junk Vars are always of composite type.  The
+  EvalPlanQual machinery assumes that whole-row Vars generated for the
+  outputs of non-table RTEs will be of composite types.  However, for
+  the case where the RTE is a function call returning a scalar type,
+  we were doing the wrong thing, as a result of sharing code with a
+  parser case where the function's scalar output is wanted.  (Or at
+  least, that's what that case has done historically; it does seem a
+  bit inconsistent.) To fix, extend makeWholeRowVar's API so that it
+  can support both use-cases.  This fixes Belinda Cussen's report of
+  crashes during concurrent execution of UPDATEs involving joins to
+  the result of UNNEST() --- in READ COMMITTED mode, we'd run the
+  EvalPlanQual machinery after a conflicting row update commits, and
+  it was expecting to get a HeapTuple not a scalar datum from the
+  "wholerowN" variable referencing the function RTE.  Back-patch to
+  9.0 where the current EvalPlanQual implementation appeared.  In 9.1
+  and up, this patch also fixes failure to attach the correct
+  collation to the Var generated for a scalar-result case.  An
+  example: regression=# select upper(x.*) from textcat('ab', 'cd') x;
+  ERROR:  could not determine which collation to use for upper()
+  function
+  <a href="http://git.postgresql.org/pg/commitdiff/dd3bab5fd74db009c946278bb314c8458a2fef11">http://git.postgresql.org/pg/commitdiff/dd3bab5fd74db009c946278bb314c8458a2fef11</a>
+</p>
+
+<p>
+Simon Riggs pushed:
+</p>
+
+<p>
+- Continue to allow VACUUM to mark last block of index dirty even when
+  there is no work to do. Further analysis required.  Revert of patch
+  c1458cc495ff800cd176a1c2e56d8b62680d9b71
+  <a href="http://git.postgresql.org/pg/commitdiff/2d2841a56c8fa37a5dd5c6d33488ba6ca37116ff">http://git.postgresql.org/pg/commitdiff/2d2841a56c8fa37a5dd5c6d33488ba6ca37116ff</a>
+</p>
+
+<p>
+Peter Eisentraut pushed:
+</p>
+
+<p>
+- Small markup and wording improvement
+  <a href="http://git.postgresql.org/pg/commitdiff/024ea25ccd553aa0ecb41d626a1016470e25a9a0">http://git.postgresql.org/pg/commitdiff/024ea25ccd553aa0ecb41d626a1016470e25a9a0</a>
+</p>
+
+<p>
+- Add pg_upgrade test suite.  It runs the regression tests, runs
+  pg_upgrade on the populated database, and compares the before and
+  after dumps.  While not actually a cross-version upgrade, this does
+  detect omissions and bugs in the involved tools from time to time.
+  It's also possible to do a cross-version upgrade by manually
+  supplying parameters.
+  <a href="http://git.postgresql.org/pg/commitdiff/08da2d282f1c3cbff141ecd218d737990cf6d234">http://git.postgresql.org/pg/commitdiff/08da2d282f1c3cbff141ecd218d737990cf6d234</a>
+</p>
+
+<p>
+Robert Haas pushed:
+</p>
+
+<p>
+- Check for INSERT privileges in SELECT INTO / CREATE TABLE AS.  In
+  the normal course of events, this matters only if ALTER DEFAULT
+  PRIVILEGES has been used to revoke default INSERT permission.
+  Whether or not the new behavior is more or less likely to be what
+  the user wants when dealing only with the built-in privilege
+  facilities is arguable, but it's clearly better when using a
+  loadable module such as sepgsql that may use the hook in
+  ExecCheckRTPerms to enforce additional permissions checks.  KaiGai
+  Kohei, reviewed by Laurenz Albe
+  <a href="http://git.postgresql.org/pg/commitdiff/f1b4aa2a84732255bd8a34fc9c7994a04409b77a">http://git.postgresql.org/pg/commitdiff/f1b4aa2a84732255bd8a34fc9c7994a04409b77a</a>
+</p>
+
+<p>
+- Move "hot" members of PGPROC into a separate PGXACT array.  This
+  speeds up snapshot-taking and reduces ProcArrayLock contention.
+  Also, the PGPROC (and PGXACT) structures used by two-phase commit
+  are now allocated as part of the main array, rather than in a
+  separate array, and we keep ProcArray sorted in pointer order.
+  These changes are intended to minimize the number of cache lines
+  that must be pulled in to take a snapshot, and testing shows a
+  substantial increase in performance on both read and write workloads
+  at high concurrencies.  Pavan Deolasee, Heikki Linnakangas, Robert
+  Haas
+  <a href="http://git.postgresql.org/pg/commitdiff/ed0b409d22346b1b027a4c2099ca66984d94b6dd">http://git.postgresql.org/pg/commitdiff/ed0b409d22346b1b027a4c2099ca66984d94b6dd</a>
+</p>
+
+<p>
+Bruce Momjian pushed:
+</p>
+
+<p>
+- Add pg_upgrade ENABLE_SAME_CATVERSION_UPGRADES macro for testing to
+  allow upgrades of the same catalog version.  (Doesn't work for
+  tablespaces, as indicated by C comment.)
+  <a href="http://git.postgresql.org/pg/commitdiff/5df1403b0f2b44235c8f401bd49dab9a8cf6bf90">http://git.postgresql.org/pg/commitdiff/5df1403b0f2b44235c8f401bd49dab9a8cf6bf90</a>
+</p>
+
+<p>
+- Allow pg_upgrade to upgrade clusters that use exclusion contraints
+  by fixing pg_dump to properly preserve such indexes.  Backpatch to
+  9.1 and 9.0 (where the bug was introduced).
+  <a href="http://git.postgresql.org/pg/commitdiff/35e27226b6751a90c9c911d08cb47b9f8a58825f">http://git.postgresql.org/pg/commitdiff/35e27226b6751a90c9c911d08cb47b9f8a58825f</a>
+</p>
+
+<p>
+- Modify pg_dump to use error-free memory allocation macros.  This
+  avoids ignoring errors and call-site error checking.
+  <a href="http://git.postgresql.org/pg/commitdiff/3c0afde11a12bb3ca7c68a30ad0dedaa0d1adef5">http://git.postgresql.org/pg/commitdiff/3c0afde11a12bb3ca7c68a30ad0dedaa0d1adef5</a>
+</p>
+
+<p>
+- Remove ENABLE_SAME_CATVERSION_UPGRADES as unnecessary.
+  <a href="http://git.postgresql.org/pg/commitdiff/32fb4546e3f8cf9c2ef524e9c20766a046521193">http://git.postgresql.org/pg/commitdiff/32fb4546e3f8cf9c2ef524e9c20766a046521193</a>
+</p>
+
+<p>
+- Fix join_path_components() to not add a leading slash when joining
+  to an initial null string.  Per report from Robert Haas in testing
+  psql \ir.
+  <a href="http://git.postgresql.org/pg/commitdiff/fd6dbc24ef1dc6b39a795b5e0e959cf500ad71d6">http://git.postgresql.org/pg/commitdiff/fd6dbc24ef1dc6b39a795b5e0e959cf500ad71d6</a>
+</p>
+
+<p>
+- Move pg_dump memory routines into pg_dumpmem.c/h and restore
+  common.c with its original functions.  The previous function
+  migration would cause too many difficulties in back-patching.
+  <a href="http://git.postgresql.org/pg/commitdiff/9a7d49d1fba666c8bfb9df0065545e85d54dbc41">http://git.postgresql.org/pg/commitdiff/9a7d49d1fba666c8bfb9df0065545e85d54dbc41</a>
+</p>
+
+<p>
+Heikki Linnakangas pushed:
+</p>
+
+<p>
+- Preserve SQLSTATE when an SPI error is propagated through PL/python
+  exception handler. This was a regression in 9.1, when the capability
+  to catch specific SPI errors was added, so backpatch to 9.1.  Mika
+  Eloranta, with some editing by Jan Urbański.
+  <a href="http://git.postgresql.org/pg/commitdiff/f21fc7f9fc63ff86d7d77d352ae274b6e2b6e09e">http://git.postgresql.org/pg/commitdiff/f21fc7f9fc63ff86d7d77d352ae274b6e2b6e09e</a>
+</p>
+
+<p>
+- Take fillfactor into account in the new COPY bulk heap insert code.
+  Jeff Janes
+  <a href="http://git.postgresql.org/pg/commitdiff/dea5f6cefe74a6cb51a1cfd39e12a2e1a026df35">http://git.postgresql.org/pg/commitdiff/dea5f6cefe74a6cb51a1cfd39e12a2e1a026df35</a>
+</p>
+
+<p>
+Alvaro Herrera pushed:
+</p>
+
+<p>
+- Dump an unvalidated constraint separately from its table.  This
+  allows possibly violating data to be imported before the constraint
+  is installed.  Bug reported by Thom Brown
+  <a href="http://git.postgresql.org/pg/commitdiff/e90710f34a6d5a73475e4241852b377675600325">http://git.postgresql.org/pg/commitdiff/e90710f34a6d5a73475e4241852b377675600325</a>
+</p>
+
+<p>
+- Improve logging of autovacuum I/O activity.  This adds some I/O
+  stats to the logging of autovacuum (when the operation takes long
+  enough that log_autovacuum_min_duration causes it to be logged), so
+  that it is easier to tune.  Notably, it adds buffer I/O counts
+  (hits, misses, dirtied) and read and write rate.  Authors: Greg
+  Smith and Noah Misch
+  <a href="http://git.postgresql.org/pg/commitdiff/9d3b50244357ef4c4e3b6e01f91de599077179c8">http://git.postgresql.org/pg/commitdiff/9d3b50244357ef4c4e3b6e01f91de599077179c8</a>
+</p>
+
+<p>
+- Fix unvalidated check constraints on domains, too.  Same bug as
+  reported by Thom Brown for check constraints on tables: the
+  constraint must be dumped separately from the domain, otherwise it
+  is restored before the data and thus prevents potentially-violating
+  data from being loaded in the first place.  Per Dean Rasheed
+  <a href="http://git.postgresql.org/pg/commitdiff/f717f4bca298b0a1170ff506e02142e4859c3dae">http://git.postgresql.org/pg/commitdiff/f717f4bca298b0a1170ff506e02142e4859c3dae</a>
+</p>
+
+<p>
+Andrew Dunstan pushed:
+</p>
+
+<p>
+- Ensure plperl strings are always correctly UTF8 encoded.  Amit
+  Khandekar and Alex Hunsaker.  Backpatched to 9.1 where the problem
+  first occurred.
+  <a href="http://git.postgresql.org/pg/commitdiff/4cdb41b54e432ee75e3c61e990b735b15fa66e81">http://git.postgresql.org/pg/commitdiff/4cdb41b54e432ee75e3c61e990b735b15fa66e81</a>
+</p>
+
+<p>
+- Use the preferred version of xsubpp, not necessarily the one that
+  came with the distro version of perl.  David Wheeler and Alex
+  Hunsaker.  Backpatch to 9.1 where it applies cleanly. A simple
+  workaround is available for earlier branches, and further effort
+  doesn't seem warranted.
+  <a href="http://git.postgresql.org/pg/commitdiff/ba00ab0b111a0cbbac612e8ea8b0d5f96534102e">http://git.postgresql.org/pg/commitdiff/ba00ab0b111a0cbbac612e8ea8b0d5f96534102e</a>
+</p>
+
+<p>
+- Use the right interpreter for encoding test.
+  <a href="http://git.postgresql.org/pg/commitdiff/efb0423cc7c6e46c22816e2acc48e8f827e341ed">http://git.postgresql.org/pg/commitdiff/efb0423cc7c6e46c22816e2acc48e8f827e341ed</a>
+</p>
+
+<p>
+- Fix MSVC builds broken by xsubpp change
+  <a href="http://git.postgresql.org/pg/commitdiff/4a9018135a37203e176a561913453b38788ac7da">http://git.postgresql.org/pg/commitdiff/4a9018135a37203e176a561913453b38788ac7da</a>
+</p>
+
+<p>
+- Make pg_dumpall build with the right object files under MSVC.  This
+  fixes a longstanding but up to now benign bug in the way pg_dumpall
+  was built. The bug was exposed by recent code adjustments. The
+  Makefile does not use $(OBJS) to build pg_dumpall, so this fix
+  removes their source files from the pg_dumpall object and adds in
+  the one source file it consequently needs.
+  <a href="http://git.postgresql.org/pg/commitdiff/91572ee0a6dfeb62dda6c375f613d1b7fdfc1383">http://git.postgresql.org/pg/commitdiff/91572ee0a6dfeb62dda6c375f613d1b7fdfc1383</a>
+</p>
+
+<h2>Rejected Patches (for now)</h2>
+<p>
+No one was disappointed this week :-)
+</p>
+
+<h2>Pending Patches</h2>
+<p>
+Mark Kirkwood sent in two revisions of a patch to allow renaming a
+database which has backends connected to it.
+</p>
+
+<p>
+Peter Geoghegan sent in four more revisions of a patch to inline
+comparators as a performance optimization.
+</p>
+
+<p>
+Alexander Korotkov sent in a WIP patch to allow index support for
+regex operators.
+</p>
+
+<p>
+Jan Urbanski sent in another revision of the patch to add cursor
+support to PL/PythonU.
+</p>
+
+<p>
+Pavel Stehule sent in a WIP patch to enable better support for
+debugging overloaded functions in PL/pgsql.
+</p>
+
+<p>
+Lars Kanis sent in two revisions of a patch to fix some infelicities
+in certain versions of MSVC.
+</p>
+
+<p>
+Pavel Stehule sent in a PoC patch to use errcontext for custom
+exceptions in PL/pgsql.
+</p>
+
+<p>
+Andrew Dunstan sent in another revision of a patch to add a \setenv
+command to psql.
+</p>
+
+<p>
+Dimitri Fontaine sent in another revision of the patch to add command
+triggers.
+</p>
+
+<p>
+Peter Eisentraut sent in a patch to fix error reports in vpath builds.
+</p>
+
+<p>
+Pavel Stehule sent in another revision of the patch to add CHECK
+FUNCTION and CHECK TRIGGER functionality.
+</p>
+
+<p>
+Andres Freund and Pavan Deolasee traded patches to avoid unneeded
+computation of snapshots.
+</p>
+
+<p>
+Peter Eisentraut sent in a patch to allow psql to report the line
+number on which an error occurred when reading from stdin.
+</p>
+
+<p>
+Ants Aasma sent in a patch to implement timing of shared buffer fills
+and per relation stats collection of said timings.  Buffer flushes are
+timed as well but aren't exposed per table because of difficulty of
+correctly attributing them.
+
+</p>
+
diff --git a/portal/tools/pwn/index_weeklynews.pl b/portal/tools/pwn/index_weeklynews.pl
index 0373b4f8..fda978ee 100755
--- a/portal/tools/pwn/index_weeklynews.pl
+++ b/portal/tools/pwn/index_weeklynews.pl
@@ -2,7 +2,7 @@
 use strict;
 use warnings;
 
-use Cwd;
+# use Cwd;
 use Date::Manip;
 use XML::RSS;